几何求解法是利用两条测量线相交于被观测点的光学交汇测量原理，得出空间直线方程。
It USES the optical cross convergence theory, where two optical measuring lines intersect at the substance point, to induce a space straight line equation.
建立了潜入式交汇的泥石流龙头运动方程，并讨论了模型参数的取值。
The equation for describing the movement of debris flow head in submerged flow pattern is established and the method for determining the corresponding parameters is proposed.
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